EP2782516A2 - Antriebsvorrichtung für ein medizinisches, insbesondere dentales oder chirurgisches, werkzeug - Google Patents
Antriebsvorrichtung für ein medizinisches, insbesondere dentales oder chirurgisches, werkzeugInfo
- Publication number
- EP2782516A2 EP2782516A2 EP12794241.5A EP12794241A EP2782516A2 EP 2782516 A2 EP2782516 A2 EP 2782516A2 EP 12794241 A EP12794241 A EP 12794241A EP 2782516 A2 EP2782516 A2 EP 2782516A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotational movement
- gear
- shaft
- surgical
- medical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
- F16H19/08—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary motion and oscillating motion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
- A61C1/02—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools
- A61C1/07—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools with vibratory drive, e.g. ultrasonic waves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
- A61C1/08—Machine parts specially adapted for dentistry
- A61C1/18—Flexible shafts; Clutches or the like; Bearings or lubricating arrangements; Drives or transmissions
- A61C1/185—Drives or transmissions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H35/00—Gearings or mechanisms with other special functional features
- F16H35/02—Gearings or mechanisms with other special functional features for conveying rotary motion with cyclically varying velocity ratio
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/04—Force
- F04C2270/042—Force radial
- F04C2270/0421—Controlled or regulated
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/1856—Reciprocating or oscillating to intermittent unidirectional motion
Definitions
- the present invention relates to a driving device for a medical, in particular dental or surgical, tool, which is designed to convert a unidirectional rotational movement into a multi-directional movement in order to operate the tool with this multi-directional movement.
- a drive device which converts a unidirectional rotational movement into a multi-directional movement in the form of a simultaneous or superimposed lifting and rotational speed reduced rotational movement is known from the patent application WO 201 1/089348 A1.
- This arranged in an angled handpiece drive device comprises a connectable with a motor drive shaft for transmitting a unidirectional rotational movement, a multi-stage planetary gear for reducing the rotational speed of the rotational movement, a shaft for transmitting the rotational speed reduced rotational movement and an eccentric shaft for generating the lifting movement.
- This drive device has a plurality of disadvantages:
- a plurality, for example, three, successively arranged planetary gear are provided, whereby a considerable space is required.
- the planetary gear can be arranged only in the remote from the head portion of the angled handpiece and separated by a bend or an angle rear portion of the handpiece, see Figure 1 of WO 201 1/089348 A1.
- the use of multiple planetary gear requires a large number of individual components and accordingly a high manufacturing and assembly costs.
- the drive device should in particular be as compact as possible, have little space, consist of a small number of items, allow high speed reductions and preferably be arranged between the angle and the head part of the angled handpiece.
- This drive device comprises a, in particular endodontic, handpiece with a tool, for example an endodontic file, which is driven by an electric motor.
- An electric control device including a microcontroller operates the electric motor such that the file undergoes a multi-directional rotational movement in the form of an oscillating rotational movement.
- the oscillating rotational movement alternately comprises a rotation of the tool in a first rotational direction about a first rotational angle and in a second, opposite rotational direction about a second rotational angle, wherein the first and the second rotational angle have different amounts.
- tissue in particular tissue of the tooth root canal, preferably by rotation of the tool in a rotational direction, removed and, preferably by rotation of the tool in the opposite direction, are promoted in the direction of the tooth crown.
- a disadvantage of this drive device is that an electrical control device including a microcontroller is needed to operate the tool. It thus creates a necessary for the realization of the oscillating rotational movement, considerable additional technical and financial effort, especially for users who have an exclusively pneumatically operated treatment device.
- a medical, in particular dental or surgical, treatment device which comprises: a drive shaft, which is designed for transmitting a unidirectional rotational movement, a tool holding device for holding a tool, which is arranged in a head part of the treatment device that they in a, preferably simultaneous, lifting and rotating movement is displaceable, and a mechanical gear arrangement which is adapted to convert the unidirectional rotational movement in a, preferably simultaneous, lifting and rotating movement, so that the tool holding device in a, preferably simultaneous, lifting and rotational movement is displaceable, wherein the gear arrangement comprises a transmission for changing, in particular reduction, the rotational speed of the unidirectional rotational movement and an eccentric gear.
- the transmission for varying the rotational speed of the unidirectional rotational movement comprises an input shaft having an axis of rotation, an output shaft connected to the tool holder, an extension connected to the input shaft having a central axis, the central axis being angled relative to the axis of rotation of the input shaft, a rotationally fixed first A plurality of teeth row, a second plurality of teeth rotatably disposed and connected to the output shaft, a sleeve rotatably mounted on the extension connected to the input shaft having a third row of teeth at its first end and a fourth row of teeth at its second end the sleeve is arranged between the first row of teeth and the second row of teeth such that at least one tooth of the third row of teeth with at least one tooth of the first row of teeth and at least one tooth of the fourth row of teeth meshes with at least one tooth of the second row of teeth to cause a change in the rotational speed of the output shaft relative to the input shaft.
- Such a constructed transmission for changing the rotational speed of the unidirectional rotational movement is very compact and has a small space requirement, whereby it is easier in a medical, especially dental or surgical, treatment device, in particular in a hand or elbow, can be integrated. It consists of a comparatively small number of individual parts and in particular makes possible a wide range of speed reductions, for example starting at 1:25 to very high reductions of, for example, 1: 900 or more.
- the angle enclosed by the central axis of the extension connected to the input shaft and the axis of rotation of the input shaft is approximately 5 ° - 15 °.
- the angle enclosed by the extension connected to the input shaft and the input shaft angle is approximately 5 ° - 15 °.
- the axial length of the connected to the input shaft extension in about 3 - 7 mm.
- the bearing device is formed on the connected to the input shaft extension as a rolling bearing, in particular as a ball bearing, or as a sliding bearing.
- the bearing device surrounds the extension connected to the input shaft radially.
- the bearing device between the input shaft connected to the extension and the sleeve arranged on the extension is arranged.
- the treatment device or the gearbox for changing the rotational speed of the unidirectional rotational movement comprises a disc-shaped or plate-shaped carrier having a first base surface and a second base surface arranged substantially parallel to the first base surface, wherein the first toothed row is arranged on the first base surface in such a way that in that their teeth point in the direction of the second row of teeth, and wherein preferably the second base area is designed as a bearing seat for a bearing element bearing the input shaft, in particular a rolling or ball bearing.
- the rotatably arranged first row of teeth is formed integrally with the plate-shaped carrier.
- the plate-shaped support is attached to a non-rotatable component of the treatment device, in particular on the outer sleeve of the treatment device, preferably by means of a shoulder or a return to a corresponding shoulder or a corresponding projection of the treatment device.
- the bearing element stores directly on the second base.
- the plate-shaped support has a, preferably central, bore through which extends at least one of the following components:
- the input shaft of the transmission for changing, in particular reduction, the speed of the unidirectional rotational movement
- a drive shaft for transmitting a unidirectional rotational movement, which drives the eccentric gear Shaft, in particular a shaft, which is connected to a part of the eccentric gear, for example an extension pin.
- the eccentric gear is driven by a shaft which passes through the transmission for changing the speed of the unidirectional rotational movement.
- the shaft driving the eccentric gear is connected to a part of the eccentric gear, for example an eccentric pin or a receptacle for an eccentric pin.
- a bore for the eccentric gear driving shaft is provided on at least one of the following components of the transmission for changing the rotational speed of the unidirectional rotational movement: on the input shaft, on the rotatably mounted first row of teeth, on the plate-shaped carrier with the first row of teeth on the the input shaft connected extension, on the rotatably mounted and connected to the output shaft second row of teeth, on the output shaft connected to the tool holder.
- the transmission for changing the rotational speed of the unidirectional rotational movement and the eccentric gear driving shaft are arranged substantially concentric.
- the included by the connected to the input shaft extension and the eccentric drive shaft driving angle is about 5 ° - 15 °.
- the eccentric drive shaft which is preferably provided with a part of the eccentric, is rotatably mounted in the output shaft, preferably by a
- the output shaft and / or the extension and / or the input shaft is designed as a hollow shaft / are, in which / which the eccentric gear driving shaft, which is preferably provided with a part of the eccentric gear, is added.
- the input shaft and / or the extension rotatably connected to the eccentric drive shaft, which is preferably provided with a part of the eccentric gear, is / are, for example by pressing.
- they are advantageously displaceable by a common drive shaft and / or a common gear in motion.
- the input shaft with the extension and the eccentric drive shaft which is preferably provided with a part of the eccentric, are rotatable relative to each other and are operable in particular at different speeds.
- the treatment device comprises a medical, in particular dental or surgical, handle element, for example a handpiece or an angle piece, which is designed in particular for endodontic treatment.
- the treatment device in particular the elbow, a handle portion having a near-head portion and an angled or bent to the near-head portion arranged rear portion, wherein the transmission for changing the rotational speed of the unidirectional rotational movement is at least partially disposed in the near-head portion.
- the gear assembly comprises a further mechanical transmission which is adapted to convert a unidirectional rotational movement in an oscillating rotational movement, so that the tool holding device is displaceable in an oscillating rotational movement, wherein the oscillating rotational movement preferably alternates rotation of the tool in a first rotational direction a first angle of rotation and in a second direction of rotation, which is substantially opposite to the first direction of rotation, comprises a second angle of rotation, wherein the first and the second angle of rotation preferably have different amounts.
- the rotational movement of the aforementioned, preferably simultaneous, lifting and rotating movement, in which the tool holding device can be displaced thus comprises, in particular, an oscillating rotational movement.
- the transmission for converting the unidirectional rotational movement into an oscillating rotational movement may also be designed to reduce the rotational speed.
- Rotation movement between the, preferably provided on the tool holding device, the eccentric gear and the transmission for changing, in particular reduction, the rotational speed of the unidirectional rotational movement is provided.
- the transmission for changing, in particular reduction, the rotational speed in the rear portion and the transmission for converting the unidirectional rotational movement in an oscillating rotational movement in the angled or bent arranged near the head portion of the treatment device, in particular the elbow provided.
- the transmission for converting the unidirectional rotational movement in an oscillating rotational movement comprises a first element for converting the transmitted from the drive shaft, unidirectional rotational movement in an oscillatory motion, in particular in an oscillating pendulum or pivotal movement, and a second element for transmitting the unidirectional rotational movement.
- a tool holding device with the transmission for converting the unidirectional rotational movement in an oscillating rotational motion connecting output shaft is connected to the first element and / or the second element such that the oscillatory motion, in particular the oscillating pendulum or pivotal movement, and the unidirectional rotational movement simultaneously the output shaft are transferable.
- the eccentric of a shaft which is preferably provided with a part of the eccentric, is driven, which extends through the transmission for converting the unidirectional rotational movement in an oscillating rotational movement and / or by the output shaft.
- the transmission comprises the conversion of the unidirectional Rotational movement in an oscillating rotational movement, in particular a central gear of the transmission, a bore for receiving the eccentric gear driving shaft.
- the output shaft which connects the tool holding device to the transmission for converting the unidirectional rotational movement in an oscillating rotational movement is formed as a hollow shaft, in which the eccentric gear driving shaft, which is preferably provided with a part of the eccentric gear, is added.
- the output shaft and the eccentric drive shaft are operable in particular at different speeds.
- the first element for converting the transmitted from the drive shaft, unidirectional rotational movement in an oscillatory motion, in particular in an oscillating pendulum or pivoting movement, a (further) eccentric and the second element for transmitting the unidirectional rotational movement comprises a plurality of gears.
- a medical, in particular dental or surgical, treatment device which comprises: a tool holding device for holding a medical, in particular dental or surgical, tool and a driving device for the tool, which is adapted to the tool in an oscillating rotational movement wherein the oscillating rotational movement comprises alternating rotation of the tool in a first rotational direction about a first rotational angle and in a second rotational direction substantially opposite to the first rotational direction by a second rotational angle, wherein the first and second rotational angles are preferably different amounts
- the drive device comprises a drive shaft arrangement adapted to transmit a unidirectional rotational movement, an output shaft, a mechanical drive drivable by the drive shaft arrangement hes gear, which is adapted to convert the transmitted from the drive shaft assembly unidirectional rotational movement in an oscillating rotational motion and transmitted to the output shaft, and cooperating with the tool holder eccentric, so that the tool holder advantageously in one, preferably simultaneous, lifting and oscillating rotational movement is displaceable.
- the drive device comprises a drive shaft arrangement
- the output shaft which connects the tool holding device to the gearbox for converting the unidirectional rotational movement into an oscillating rotational movement, is designed as a hollow shaft or has a bore in which the shaft driving the eccentric gear, which is preferably provided with a part of the eccentric gear, is received.
- the output shaft and the shaft driving the eccentric gear are in particular movable relative to each other and / or operable at different rotational speeds.
- the drive shaft of the mechanical transmission is designed to convert the unidirectional rotational movement in an oscillating rotational movement as a hollow shaft or a
- the two shafts are advantageously displaceable by a common drive shaft and / or a common gear in motion.
- the drive shaft of the mechanical transmission for converting the unidirectional rotational movement in an oscillating rotational movement and the eccentric gear driving shaft, which is preferably provided with a part of the eccentric, are rotatable relative to each other and in particular are operable at different speeds.
- the treatment device further comprises a transmission for transmitting and / or changing, in particular reduction, the rotational speed of the unidirectional rotational movement.
- the speed, in particular a gear of the transmission, directly on a shaft driving the eccentric gear, which is preferably provided with a part of the eccentric gear, and / or on a mechanical gear for converting the unidirectional rotational movement in an oscillating rotational motion driving drive shaft assembly is arranged such that the shaft driving the eccentric gear and the drive shaft assembly driving the mechanical gear to convert the unidirectional rotational motion into an oscillating rotational motion are collectively drivable by the at least part of the gearbox to transmit and / or vary the rotational speed.
- the transmission for transmission and / or modification, in particular reduction, the speed comprises: An input shaft having an axis of rotation, one with the
- Tool holding device connected output shaft, an input shaft connected to the input shaft, the central axis is arranged angled to the axis of rotation of the input shaft, a rotatably arranged first row of teeth with a plurality of teeth, a rotatably mounted and connected to the output shaft second row of teeth with a plurality of teeth, a rotatable arranged on the sleeve connected to the input shaft extension sleeve having at its first end a third row of teeth and at its second end a fourth row of teeth, wherein the sleeve is arranged between the first row of teeth and the second row of teeth, that at least one tooth of the third row of teeth with at least one tooth of the first row of teeth and at least one tooth of the fourth row of teeth meshes with at least one tooth of the second row of teeth to cause a change in the rotational speed of the output shaft relative to the input shaft.
- At least one bearing device is provided on the connected to the input shaft extension, so that the sleeve arranged on the extension is rotatable relative to the extension, wherein one end of the extension is formed as a free end, which is free and unsupported beyond the bearing device in the direction Tool holding device extends.
- the angle enclosed by the extension connected to the input shaft and the input shaft angle is approximately 5 ° - 15 °.
- the axial length of the connected to the input shaft extension in about 3 - 7 mm.
- the bearing device is formed on the connected to the input shaft extension as a rolling bearing, in particular as a ball bearing, or as a sliding bearing.
- the bearing device surrounds the extension connected to the input shaft radially.
- the bearing device between the input shaft connected to the extension and the sleeve arranged on the extension is arranged.
- the treatment device or the transmission for changing the rotational speed of the unidirectional rotational movement a disc or plate-shaped carrier with a first
- Base surface and having a substantially parallel to the first base second base surface, wherein on the first base, the rotatably arranged first row of teeth is provided such that their teeth point in the direction of the second row of teeth, and preferably wherein the second base as a bearing seat for the input shaft stocking bearing element is formed.
- the rotatably arranged first row of teeth is formed integrally with the plate-shaped carrier.
- the plate-shaped support is attached to a non-rotatable component of the treatment device, in particular on the outer sleeve of the treatment device, preferably by means of a shoulder or a return to a corresponding shoulder or a corresponding projection of the treatment device.
- the bearing element stores directly on the second base.
- the plate-shaped support has a, preferably central, bore through which extends at least one of the following components:
- the input shaft of the transmission for changing, in particular reduction, the speed of the unidirectional rotational movement, a drive shaft for transmitting a unidirectional rotational movement, which drives the eccentric gear Shaft, in particular a shaft, which is connected to a part of the eccentric gear, for example an extension pin.
- the gearbox for converting the unidirectional rotational movement into an oscillating rotational movement between, preferably provided on the tool holding device,
- the treatment device comprises a medical, in particular dental or surgical, handle element, for example a handpiece or an angle piece, which is designed in particular for endodontic treatment.
- the treatment device in particular the elbow, a head portion with the tool holding device and a handle portion, wherein the handle portion has a near-head portion and an angled or bent to the near-head portion arranged rear portion, wherein the mechanical transmission for converting the unidirectional rotational movement in an oscillating Rotational movement is at least partially disposed in the near-head portion.
- the transmission for transmitting and / or changing, in particular reduction, the rotational speed of the unidirectional rotational movement is at least partially arranged in the rear portion.
- the drive shaft assembly comprises a first drive shaft on which at least a part of the transmission for transmitting and / or changing, in particular reduction, the speed of the unidirectional rotational movement is provided, and a second drive shaft to which the transmission for converting the unidirectional rotational movement in an oscillating rotational movement is provided, wherein the two drive shafts are interconnected by a transmission.
- the gear connecting the two drive shafts is designed as a reduction gear or as a 1: 1 gear.
- the first drive shaft is provided substantially in the rear portion and the second drive shaft substantially in the head near portion.
- the two drive shafts are arranged angled to each other and / or the eccentric drive shaft, which is preferably provided with a part of the eccentric, is arranged angled to the first drive shaft.
- the mechanical transmission for converting the unidirectional rotational movement in an oscillating rotational movement comprises a first element for converting the transmitted from the drive shaft assembly, unidirectional rotational movement in an oscillatory motion, in particular in an oscillating pendulum or pivotal movement, and a second element for transmitting the unidirectional rotational movement.
- a drive device for a medical, in particular dental or surgical, tool is provided, which is adapted to set the tool in an oscillating rotational movement, wherein the oscillating rotational movement of an alternating rotation of the tool in a first rotational direction about a first Rotation angle and in a second rotational direction substantially opposite the first rotational direction by a second rotational angle, the first and second rotational angles preferably having different magnitudes, and wherein the drive device comprises: a drive shaft assembly adapted to transmit a unidirectional rotational movement is an output shaft and a drivable by the drive shaft assembly mechanical transmission, which is adapted to oscillate transmitted from the drive shaft assembly unidirectional rotational movement in one en Convert rotary motion and transfer it to the output shaft.
- the drive device is independent of an electrical supply, in particular independent of an electric motor drive and / or electrical control and thus can advantageously with any treatment devices, in particular also with pneumatic treatment devices.
- the mechanical transmission has a first element for converting the transmitted from the drive shaft assembly, unidirectional rotational movement in an oscillatory motion, in particular in an oscillating pendulum or pivotal movement, and a second element for transmitting the unidirectional rotational movement.
- the output shaft is connected to the first element and / or the second element such that the oscillatory motion, in particular the oscillating pendulum or pivotal movement, and the unidirectional rotational movement can be transmitted simultaneously to the output shaft.
- Pendulum or pivoting movement has an eccentric gear.
- At least a portion of the eccentric is provided on a ring gear of the mechanical transmission, wherein the ring gear is preferably designed to be rotatable relative to the drive shaft assembly.
- At least one of the gears preferably rotatably mounted on the output shaft, wherein in particular the oscillation movement generated by the first element via this at least one connected to the output shaft gear to the output shaft is transferable.
- Rotary movement is arranged in the ring gear of the eccentric gear.
- the ring gear has an internal toothing, which meshes with the at least one arranged in the ring gear.
- the drive shaft assembly comprises a first drive shaft and a second drive shaft, wherein the first drive shaft with the first element of the mechanical transmission for converting the transmitted from the drive shaft assembly, unidirectional rotational movement in an oscillatory motion, in particular in an oscillating pendulum or Pivoting movement, and the second drive shaft is connected to the second element of the mechanical transmission for transmitting the unidirectional rotational movement.
- the first drive shaft and the second drive shaft are connected to each other via a transfer case, so that they are driven by a common motor.
- a torque limiting device is provided, preferably on the mechanical transmission, for example a slip clutch, for limiting the transferable torque to the tool.
- the output shaft is connected directly and / or fixed to the second element for transmitting the unidirectional rotational movement, in particular with at least one of the gears of the second element.
- a medical, in particular dental or surgical, treatment device preferably a medical, in particular dental or surgical, handle element is provided, which is designed in particular for endodontic treatment and which (s) a drive device according to the third embodiment described above has, in particular a drive device with a drivable by the drive shaft assembly mechanical transmission, which is adapted to convert the transmitted from the drive shaft assembly unidirectional rotational movement in an oscillating rotational movement and transmitted to the output shaft.
- the treatment device or the handle element preferably has a surrounding the mechanical transmission sleeve with a bearing, in particular a sliding or needle bearing, through which the mechanical transmission, preferably the eccentric of the mechanical transmission, in particular the ring gear of the eccentric of the mechanical transmission, rotatable in the treatment device or the handle element is mounted.
- a bearing in particular a sliding or needle bearing
- a medical, in particular dental or surgical, treatment device preferably a medical, in particular dental or surgical, handle element
- a medical, in particular dental or surgical, handle element which is designed in particular for endodontic treatment, and which comprises: a drive shaft, which Transmission is formed of a unidirectional rotational movement, a tool holding device for holding a tool and the drive shaft with the tool holder connecting gear assembly comprising a plurality, preferably three, mechanical transmission, and which is adapted to convert the transmitted from the drive shaft unidirectional rotational movement such that the tool holder in a, preferably simultaneous, lifting and oscillating Rotation movement with respect to the speed of the transmitted from the drive shaft, unidirectional rotational movement of reduced speed is displaceable.
- the oscillating rotational movement preferably comprises an alternating rotation of the tool in a first rotational direction about a first rotational angle and in a second rotational direction, which is substantially opposite to the first rotational direction, by a second rotational angle, wherein the first and the second rotational angle preferably have different amounts.
- the gear assembly comprises a transmission for reducing the rotational speed of the unidirectional rotational movement, an eccentric gear and a gear which is adapted to convert the transmitted from the drive shaft unidirectional rotational movement in an oscillating rotational movement.
- these three mentioned transmissions have one or more of the aforementioned embodiments.
- a preferred embodiment of a use of any of the above-described medical, particularly dental or surgical, treatment devices or handle elements includes endodontic treatment.
- Figures 1 to 4 show a first embodiment of a mechanical transmission driving apparatus which converts a unidirectional rotational movement into an oscillating rotational movement.
- FIGS. 5-7 show a second embodiment of a drive device with a mechanical transmission that converts a unidirectional rotational movement into an oscillating rotational movement.
- Figures 8A, 8B and 9A, 9B respectively show in front and rear view two different embodiments of internal geared ring gears, which are part of the eccentric of the mechanical transmission of the drive device.
- FIG. 10 shows an exemplary embodiment of an oscillating rotational movement that can be generated by a drive device with a mechanical transmission that converts a unidirectional rotational movement into an oscillating rotational movement.
- Figure 1 1 shows a medical, in particular dental or surgical, treatment device with a medical, in particular dental, handle element, in which a drive device with a mechanical transmission, which converts a unidirectional rotational movement in an oscillating rotational movement, is provided.
- FIG. 12 shows a medical, in particular dental or surgical, treatment device with a gear arrangement which has a transmission for changing, in particular reduction, the rotational speed and an eccentric gear so that the tool holder of the treatment device changes in a, preferably simultaneous, lifting and rotating movement Speed is displaceable.
- FIG. 13 shows the gear arrangement of FIG. 12 in an enlarged view.
- FIG. 14 shows a medical, in particular dental or surgical, treatment device with a gear arrangement which converts a transmission, in particular reduction, the rotational speed, an eccentric gear and a gear, which is designed to convert the unidirectional rotational movement transmitted by the drive shaft into an oscillating rotational movement , so that the tool holding device of the treatment device is displaceable in a, preferably simultaneous, reciprocating and oscillating rotational movement with a different speed.
- FIGS 1 - 4 and 5-7 show different embodiments of drive devices 1, 1A for a medical, especially dental or surgical, preferably endodontic, tool.
- the following describes the common components and / or functions of the two drive devices 1, 1A:
- the drive devices 1, 1A each have a mechanical gear 4, which is designed to convert a unidirectional rotational movement into an oscillating rotational movement.
- oscillating rotational movement refers to a rotational movement that alternately comprises a rotation of the tool in a first rotational direction about a first rotational angle and in a second rotational direction, which is substantially opposite to the first rotational direction, by a second rotational angle, wherein the first and the second rotational angle preferably have different amounts.
- an oscillating rotational movement comprises a course of movement in which, for example, a shaft element or tool connected to the mechanical transmission 4 is rotated alternately with a first rotation angle clockwise or counterclockwise and with a second rotation angle clockwise or counterclockwise, the angles of rotation preferably have different amounts.
- this movement course due to the different amounts of the rotation angle results in a rotational movement of the shaft member or tool in a preferred or working direction, wherein the shaft member or tool undergoes an oscillating movement due to the different directions of rotation.
- the oscillating rotational movement thus enables an alternating removal of tissue at a preparation region, in particular from the tooth root canal, and a conveying of the ablated tissue away from the preparation region, for example in the direction of the dental crown or the mechanical transmission 4.
- the drive devices 1, 1A have, in addition to the transmission 4, a drive shaft arrangement 2 and an output shaft 3, which are both operatively, in particular mechanically, connected to the transmission 4.
- the drive shaft assembly 2 is connected or connectable to a motor drive, for example with a pneumatically operable motor or an electrically operable motor.
- the motor drive generates a unidirectional clockwise or counterclockwise rotary motion transmitted from the input shaft assembly 2 to the transmission 4 or provided to the transmission 4. From the figures 1-7 it can be seen that the drive shaft assembly 2 preferably at least two drive shafts 1 1, 12, whose function will be discussed further below.
- the output shaft 3 transmits the oscillatory rotational movement generated by the transmission 4 to the tool and / or to a tool holding device.
- the mechanical transmission 4 has a first element 5 for the conversion of the
- Drive shaft assembly 2 transmitted unidirectional rotational movement in an oscillatory motion, in particular in an oscillating pendulum or pivotal movement, and a second element 6 for transmitting the unidirectional rotational movement.
- the output shaft 3 is connected to the first element 5 and / or the second element 6 in such a way that the oscillatory movement and the unidirectional rotational movement are simultaneously transferable to the output shaft 3.
- the eccentric gear 5A comprises an eccentric 8, for example an eccentric pin or an eccentric disc, and a receptacle 17 for the eccentric 8.
- the receptacle 17 may be formed, for example, as a groove, slot, groove, recess or guide for the eccentric 8.
- the eccentric 8 is in particular eccentrically to a rotational axis of the drive shaft assembly 2, in particular to the axis of rotation of the first drive shaft 1 1, respectively.
- the eccentric 8, in particular a pin-shaped eccentric 8, may preferably be provided with a bearing, for example a rolling, needle or plain bearing.
- a first part of the eccentric 5A is provided on the drive shaft assembly 2, in particular on the first drive shaft 1 1, preferably the eccentric 8 (see, for example, Figure 3), but it is just as possible, the receptacle 17 for the eccentric 8 at the Drive shaft assembly 2 to order.
- Another part of the eccentric gear 5A for example the receptacle 17 or the eccentric 8, is provided on the gear 4 itself, in particular on a ring gear 7 of the mechanical gear 4 (see also FIG. 3).
- a wall section 7B or support for an eccentric part extending from a jacket 7A of the ring gear 7 is preferably provided on the ring gear 7, on which the further part of the eccentric gear 5A is located.
- the wall section 7B or carrier extends in particular radially from an end edge or end face of the jacket 7A, in particular into the clear width of the ring gear 7 bounded by the jacket 7A. Adjacent to the wall section 7B or carrier, the drive shaft 11 is arranged.
- the ring gear 7 relative to the drive shaft assembly 2, in particular to the first drive shaft 1 1, rotatable, for example, pivotally formed.
- the ring gear 7 on its inner side, in particular on the inside of the jacket 7A, an internal toothing 10, whose function will be discussed further below.
- the second element 6 for transmitting the unidirectional rotational movement a plurality of gears 8, 8A, 9, 9A.
- at least part of the second element 6 for transmitting the unidirectional rotational movement or at least one gear 8, 8A, 9, 9A is surrounded by the ring gear 7 or arranged in the ring gear 7.
- the gears 8, 8A, 9, 9A are connected to the drive shaft assembly 2, in particular to its second drive shaft 12, so that the drive shaft assembly 2 transmits the unidirectional rotational movement to the gears 8, 8A, 9, 9A and causes them to rotate.
- at least one of the gears 8, 8A, 9, 9A is non-rotatably connected to the drive shaft assembly 2, in particular to the second drive shaft 12 for transmitting the unidirectional rotational movement.
- the gears 8, 8A, 9, 9A comprise a central gear 9, 9A about which one or more, for example two or three, peripheral gears 8, 8A are arranged.
- the central gear 9, 9A is engaged with the at least one peripheral gear 8, 8A so that rotational motions and torques are transferable between the central gear 9, 9A and the at least one peripheral gear 8, 8A.
- the at least one peripheral gear 8, 8A meshes with the internal gear 10 of the ring gear 7.
- the at least one peripheral gear 8, 8A is rotatably mounted on shaft or shaft portions 18.
- the drive shaft assembly 2 a first drive shaft 1 1 and a second drive shaft 12, wherein the first drive shaft 1 1 with the first element 5 of the mechanical transmission 4 for converting the transmitted from the drive shaft assembly 2, unidirectional rotational movement in one Oscillation movement, in particular in an oscillating pendulum or pivotal movement, and the second drive shaft 12 is connected to the second element 6 of the mechanical transmission 4 for transmitting the unidirectional rotational movement.
- the two drive shafts 1 1, 12 are driven by a common motor, a transfer case 13 is provided, which connects the two drive shafts 1 1, 12 together.
- the transfer case 13 is formed, for example, by two meshing gears 13A, 13B, with one gear 13A, 13B each mounted on a drive shaft 11, 12.
- the two gears 13A, 13B may preferably have a different number of teeth to form a lower or a transmission gear, so that the two drive shafts 1 1, 12 rotate at different speeds and / or torques.
- the first, connected to the first element 5 of the mechanical transmission 4 for converting the transmitted from the drive shaft assembly 2, unidirectional rotational movement in an oscillating motion drive shaft 1 1 is connected via the transfer case 13 to the common motor.
- the second transmits to the second element 6 of the mechanical transmission 4 for transmission of the unidirectional Rotational movement connected drive shaft 12, the rotational movement of the common motor via the transfer case 13 to the first drive shaft 1 first
- an axis of rotation 19A of the drive shaft assembly 2 in particular a rotation axis 19A of the drive shafts 1 1, 12, and / or an axis of rotation 19B of the output shaft 3 forms a central and / or rotational axis for at least parts of the mechanical transmission 4, in particular for one of the gears 8, 8A, 9, 9A, in particular for the central gear 9, 9A, and / or for the ring gear 7.
- the central gear 9 is thus also set in rotation and drives due to the meshing engagement, according to the figures 1 - 4 three, peripheral gears 8 at.
- the direction of rotation of the rotated by the central gear 9 in peripheral gears 8 is opposite to the direction of rotation of the central gear 9 and the second drive shaft 12.
- the rotatably mounted on the shaft or shaft portions 18 peripheral gears 8 move due to their meshing engagement with the Internal toothing 10 of the ring gear 7 along the inner wall of the ring gear 7.
- the peripheral gears 8 thus undergo a rotational movement within the ring gear 7 or along the inner wall.
- each peripheral gear 8 or each shaft or shaft portions 18 By a connection of each peripheral gear 8 or each shaft or shaft portions 18 by means of a connecting element 20, for example an arm or a web, with the output shaft 3, the rotational movement of the peripheral gears 8 is transmitted to the output shaft 3.
- the gears 8, 9 are thus part of the second element 6 for transmitting the unidirectional rotational movement of the drive shaft assembly 2 to the output shaft 3.
- the directions of rotation of the drive shaft assembly 2 and the output shaft 3 are directed the same.
- the teeth of the gears 8, 9 it is the Further preferably possible to form the second element 6 of the transmission 4 as a transmission or reduction gear or as a 1: 1 gear without over or under gear reduction.
- the likewise unidirectionally rotating first drive shaft 1 1 drives simultaneously, i. while the unidirectional rotational movement is transmitted to the output shaft 3 by the second element 6, the first element 5, i. the eccentric gear 5A, the transmission 4 on.
- the ring gear 7, which is rotatable with respect to the drive shaft assembly 2 or the shafts 3, 1 1, 12 rotates or thus oscillates alternately by a rotation angle in the clockwise and counterclockwise directions.
- At least one of the gears 8, 8A, 9, 9A preferably rotatably mounted on the output shaft 3, wherein preferably the oscillatory movement generated by the first element 5 via this at least one connected to the output shaft 3 gear 8, 8A, 9, 9A is transferable to the output shaft 3.
- a movement of the ring gear 7 which is in the same direction as the rotation of the peripheral gears 8 causes a rotation of the output shaft 3 or a tool connectable or connected to the output shaft 3 in a first direction, in particular in a preferred or working direction already mentioned above, and / or causes a movement about a first, large rotation angle of the output shaft 3 or the tool.
- a movement of the ring gear 7 opposite the rotational movement of the peripheral gears 8 causes a rotation of the output shaft 3 or a tool connectable or connected to the output shaft 3 in a second, opposite direction, in particular against the preferential or working direction or in a return direction, and / or causes a movement about a second, small angle of rotation of the output shaft 3 or the tool.
- the angular velocity of the ring gear 7 during the oscillatory movement is different due to the different distance of the eccentric 8 from the rotation axis 19A.
- the eccentric gear 5A is formed such that during movement of the output shaft 3 or the tool in the above-mentioned second direction, in particular against the preferential or working direction or in a return direction, the angular velocity of the ring gear 7 is greater than during the movement of the output shaft 3 or the tool in the first direction, in particular in the preferred or working direction.
- the angle of rotation of the ring gear 7 remains substantially constant during the oscillatory movement.
- the output shaft 3 or the tool rotate alternately in a first direction of rotation 21 (also referred to as preferred or working direction , in which material is removed) by a first angle of rotation and in a second direction of rotation 22 (opposite to the preferential or working direction or also referred to above as the return direction, in which abraded material is conveyed away), which is the first direction of rotation 21 is substantially opposite, by a second angle of rotation, wherein the first and the second angle of rotation preferably have different amounts.
- a first direction of rotation 21 also referred to as preferred or working direction , in which material is removed
- a second direction of rotation 22 opposite to the preferential or working direction or also referred to above as the return direction, in which abraded material is conveyed away
- the angle of rotation of the first direction of rotation 21 is approximately 150 ° and the angle of rotation of the second direction of rotation 22 is approximately 30 °.
- any other values for the rotation angles are possible as long as the rotation angles have different amounts, for example, about 45 ° and 20 °, 180 ° and 90 °, 270 ° and 90 °, 450 ° and 180 °, etc.
- the in the direction of rotation shown in FIG. 10 by way of example only, it is therefore possible to reverse the directions of rotation of the two rotary movements 21, 22 shown in FIG the direction of rotation 21 would then run in the counterclockwise direction and the direction of rotation 22 in the clockwise direction.
- the frequency of the oscillation movement of the output shaft 3 or of the tool is, for example, in the range of approximately 3 to 50 hertz, in particular in the range of approximately 5 to 20 hertz, in particular approximately 10 hertz.
- the operation of the drive device 1A of Figures 5-7 is similar to the above-described operation of the drive device 1.
- the structure of the drive device 1A is different in that the second drive shaft 12 via the connecting elements 20 with the, preferably three, peripheral gears 8A and the output shaft 3 is rotatably connected to the central gear 9A.
- the peripheral gears 8A are in turn rotatably arranged relative to the second drive shaft 12, in particular rotatable on the shaft or shaft portions 18 fastened to the connecting elements 20.
- a torque limiting device for limiting the torque that can be transmitted to the tool for example a slip clutch, is provided on the drive device 1, 1A, in particular on the mechanical transmission 4.
- the torque limiting device may, for example, be arranged on the drive side, in particular on the drive shaft arrangement 2 or on at least one drive shaft 1 1, 12, or on the output side, in particular on the output shaft 3.
- 8A, 8B and 9A, 9B respectively show front and rear views of embodiments of the ring gear 7 with different, in particular groove or slot-shaped, receptacles 17A, 17B for the eccentric 8.
- the receptacles 17, 17A, 17B for example, straight, bent, substantially S-shaped, obliquely, centrally or eccentrically formed or arranged.
- FIG. 11 shows a medical, in particular dental or surgical
- Treatment device 14 preferably a medical, in particular dental or surgical, handle element 14 A, which (s) is in particular designed for endodontic treatments, with a drive device 1, 1 A, which is adapted to set the tool in an oscillating rotational movement.
- the mechanical transmission 4 of the drive device 1, 1A is surrounded by a sleeve 15 with a bearing 16, in particular a sliding or needle bearing, wherein on the sleeve 15, in particular on the bearing 16, the mechanical transmission 4, preferably the eccentric 5A of the mechanical gear 4, more preferably the ring gear 7 of the eccentric 5A of the mechanical transmission 4 is rotatably mounted.
- the sleeve 15 forms at least a part of the bearing 16, in particular of the sliding bearing.
- the sleeve 15 is formed, for example, by a gripping or outer sleeve of the treatment device 14 or the handle element 14A.
- the gear 4, preferably the eccentric gear 5A, in particular the ring gear 7 of the eccentric gear 5A is rotatably supported by the bearing 16 in the treatment device 14 or the handle member 14A.
- the treatment device 14 or the handle element 14A further comprises one or more of the following components: A tool holding device 23 for releasably holding a tool connectable to the treatment device 14 or the handle element 14A, the tool holding device 23 being connected to the output shaft 3 of the drive device 1, 1A is such that the oscillating rotational movement is transferable to the tool holder 23; a motor drive, in particular an electric motor or a pneumatically operated motor; a coupling device 24 for connecting the treatment device 14 or the handle element 14A with a motor drive, in particular an electric motor or a pneumatically operable motor, and / or with a control and / or regulating device and / or with at least one media source, in particular a compressed air or water source; a light source, in particular with a light-emitting, optical semiconductor element, for illuminating the preparation site and / or the tool; at least one media line for conveying a medium in the direction of the tool holder 23 and / or to the preparation site; a storage element for,
- FIGS. 12 and 14 show two treatment devices 25, 25A, in particular in the form of a handle element or handpiece or elbow 49, 49A.
- the treatment devices 25, 25A comprise: a head part 27 with a tool holding device 23 received therein and a grip part 46.
- the tool holding device 23 is movably accommodated in the head part 27, in particular being displaceable in a preferably simultaneous rotation and stroke movement.
- the tool holder 23 is preferably designed to releasably hold a tool.
- the tool projects laterally out of the head part 27 of the angle piece 49, 49A through a tool receiving opening 50.
- the grip part 46 comprises a head-near portion 46A and an angled or bent rearward portion 46B.
- a drive shaft assembly 2 extends from a coupling or connection device 24 for connecting the treatment device 25, 25A or the handle member 49, 49A with a motor drive, in particular an electric motor or a pneumatically operable motor, and / or with a control and / or regulating device and / or with at least one media source, in particular a compressed air or water source, by the treatment device 25, 25A.
- the drive shaft assembly 2 comprises one or more drive shafts 1 1, 12, 26, 31, which is / are designed for transmitting a unidirectional rotational movement.
- the unidirectional rotational movement is preferably provided by a motor drive releasably connectable to the coupling or connecting device 24 and transmitted to the drive shaft arrangement 2 via the coupling or connecting device 24.
- the at least one drive shaft 1 1, 12, 26, 31 is rotatably mounted in bearing elements 44, 55, preferably in rolling or ball bearings.
- Both treatment devices 25, 25A further include a gear assembly 28 which includes a plurality of mechanical gears to place the tool holder 23 in a, preferably simultaneous, rotational and lifting movement.
- the gear arrangement 28 of the treatment device 25 comprises at least one transmission 29 for changing, in particular reducing, the rotational speed of the (provided by the motor drive and at least one drive shaft 26). 31 transmitted) unidirectional rotational movement and an eccentric gear 30.
- the tool holding device 23 in a, preferably simultaneous, rotary and lifting movement can be set, in which the rotational movement is formed by a substantially continuous rotation in a rotational direction about a rotation axis 52.
- a further mechanical transmission 47 is provided for transmitting and / or changing the rotational speed of the unidirectional rotational movement, which is designed, for example, as a 1: 1 gear or as a reduction gear.
- the gear 47 comprises two gears, wherein in particular a gear 48 is arranged directly on the eccentric shaft 45 and / or on a transmission 29 driving the shaft 31, so that the eccentric shaft 45 and the shaft 31 are jointly driven by the gear 47.
- the gears 29, 30 of the gear arrangement 28 of the treatment device 25 are shown enlarged in FIG.
- the transmission 29 for changing, in particular reducing, the rotational speed of the unidirectional rotational movement comprises: an input shaft 31 having a rotation axis 32, an output shaft 33 connected to the tool holder 23, an extension 34 connected to the input shaft 31 having a central axis 35, the central axis 35 angled to the axis of rotation 32 of the input shaft 31 is arranged, a rotatably arranged first row of teeth 36 with a plurality of teeth, a rotatably mounted and connected to the output shaft 33 second row of teeth 37 with a plurality of teeth, one rotatable on the with the input shaft
- extension 34 arranged sleeve 38 having at its first end a third row of teeth 39 and at its second end a fourth row of teeth 40, wherein the sleeve 38 is arranged between the first row of teeth 36 and the second row of teeth 37 that at least one tooth the third row of teeth 39 with at least one tooth of the first row of teeth 36 and at least one tooth of the fourth row of teeth 40 with at least one tooth of the second row of teeth 37 meshes.
- At least one bearing device 41 is provided on the extension 34 connected to the input shaft 31, for example at least one rolling or ball bearing, so that the sleeve 38 arranged on the extension 34 is rotatable relative to the extension 34.
- a plate-shaped carrier 43 is provided with a first base surface 43A and a second base surface 43B arranged substantially parallel to the first base surface 43A.
- the rotatably arranged first row of teeth 36 is provided such that their teeth point in the direction of the second row of teeth 37, wherein preferably the second base 43B is formed as a bearing seat for the input shaft 31 overlapping bearing member 44.
- the plate-shaped carrier 43 has a, preferably central, bore 62 through which, for example, the input shaft 31 or a shaft 45 driving the eccentric gear 30 extends. All rows of teeth 36, 37, 39, 40 are in particular annular or circular. Due to the inclination of the extension 34 of about 5 ° - 15 ° with respect to the axis of rotation
- the engaging portions of the meshing rows of teeth 36, 39 and 37, 40 is due to the inclined arrangement of the sleeve 38 diagonally opposite: For example, is the engaging portion of the rows of teeth 37, 40 bottom left, so the engaging portion of the rows of teeth 36, 39 top right, see Figure 13.
- the number of teeth of the rows of teeth 36, 37, 39, 40 for example, is about 10 -
- a toothing 59 is provided between the output shaft 33 and the tool holder 23, to transmit the rotational movement of the output shaft 33 to the tool holding device 23.
- the toothing comprises a toothed wheel 60 on the output shaft 33 and a toothed wheel 61 on the tool holder 23, in particular on a bush or sleeve of the tool holder 23.
- the eccentric gear 30 comprises, for example, an eccentric pin 53, preferably mounted in a bearing bush 54, and a receptacle or recess 51 for the eccentric pin 53, preferably on the tool holder 23.
- a shaft 45 is rotatable about the drive shaft 26 in rotation about the eccentric gear 30 to drive.
- the eccentric gear 30 displaces the tool holding device 23 into a reciprocating motion or stroke movement along the axis 52.
- at least part of the eccentric gear 30, in particular eccentric pin 53 is provided directly on the shaft 45.
- the shaft 45 preferably passes through the gear 29 for changing the speed of the unidirectional rotational movement.
- the output shaft 33 including the gear 60, the extension 34 and the input shaft 31 are formed as hollow shafts and have corresponding bores 56, 57, in which the shaft 45 is received.
- the input shaft 31 and the eccentric shaft 45 are rotatably connected to each other, so that they together, for example by a common drive shaft 26, a common gear 47 or a common motor drive, are driven.
- the output shaft 33 and the eccentric shaft 45 are rotatable relative to each other, in particular, a bearing 58, for example, a sliding bearing, on the inside of the output shaft 33 and the outer side of the eccentric shaft 45 is provided.
- a bearing 58 for example, a sliding bearing
- the eccentric gear 30 corresponds in its construction and its function to the eccentric gear 30 of Figures 12, 13; to avoid repetition of the eccentric 30 is therefore not described again.
- the transmission 4 for converting a unidirectional rotational movement into an oscillating rotational movement, wherein the oscillating rotational movement of an alternating rotation of the tool in a first direction of rotation 21 by a first rotation angle and in a second direction of rotation 22 which is the first direction of rotation 21 substantially opposite to a
- the first and second rotation angles 21, 22 preferably have different amounts, corresponds in their structure and function to the transmission of FIGS. 1-7, so that only the differences are described below: From FIG It can be seen that the gear 4 is arranged in the near-head portion 46 A of the handle portion 46. Correspondingly, the eccentric shaft 45 extends through the gear 4 and through the output shaft 3 designed as a hollow shaft.
- the gear 4, in particular the central gear 9, 9A of the gear 4 accordingly have a bore 63 for the eccentric shaft 45.
- a mechanical gear 47 for transmitting and / or changing the rotational speed of the unidirectional rotational movement which is designed, for example, as a 1: 1 gear or as a reduction gear, connects the gear 4 and the eccentric gear 30 to the drive shaft 26.
- the gear 47 comprises two gears
- a gear 48A is arranged directly on the eccentric shaft 45 and / or on a gear 4 driving shaft 1 1, 12, so that the eccentric shaft 45 and the shaft 1 1, 12 are driven together by the gear 47.
- the eccentric shaft 45 and the shaft 1 1, 12 rotatably connected to each other.
- the transmission 29 for changing, in particular reducing, the rotational speed of the unidirectional rotational movement likewise corresponds in its construction and function to the transmission of FIGS. 12, 13, so that only the differences are described below. From FIG. 14 it can be seen that the gear 29 in the rear portion 46B of the handle portion
- the output shaft 33, the extension 34 or the input shaft 31 need not be formed as a hollow shaft, but at least one of these components can also be made as a solid shaft.
- the near-end of the output shaft 33 is at least a part of the transmission
- the treatment device 25A or the handle member 49A are thus formed due to the gear assembly 28 with the three mechanical gears 4, 29, 30, which convert the unidirectional rotational movement received or transmitted by the drive shaft 26 such that the tool holding device 23 in a, preferably simultaneous, stroke - And oscillating rotational movement with respect to the speed of the transmitted from the drive shaft 26, unidirectional rotational movement of reduced speed is displaceable.
- the invention is not limited to the described embodiments, but includes all embodiments that apply or include the principle, analogous principle of operation of the invention.
- the output shaft 3 directly and / or fixed to the first element 5 for converting the transmitted from the drive shaft assembly 2, unidirectional rotational movement in an oscillatory motion, in particular in an oscillating pendulum or pivoting movement, in particular with the Eccentric 5A, preferably to be connected to the ring gear 7.
- part of the first element 5, in particular of the eccentric gear 5A, for example the eccentric 8 or the receptacle 17, is provided on a carrier of the at least one peripheral gear 8, for example on the connecting element 20.
- the receptacle 17 on the support of the at least one peripheral gear 8 and the, in particular pin-shaped, eccentric 8 on the first shaft 1 1 is arranged.
Landscapes
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Engineering & Computer Science (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Epidemiology (AREA)
- Dentistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Mechanical Engineering (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Surgical Instruments (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12794241.5A EP2782516B1 (de) | 2011-11-21 | 2012-11-21 | Antriebsvorrichtung für ein medizinisches, insbesondere dentales oder chirurgisches, werkzeug |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201161562375P | 2011-11-21 | 2011-11-21 | |
| EP11189869 | 2011-11-21 | ||
| EP12159781 | 2012-03-16 | ||
| EP12794241.5A EP2782516B1 (de) | 2011-11-21 | 2012-11-21 | Antriebsvorrichtung für ein medizinisches, insbesondere dentales oder chirurgisches, werkzeug |
| PCT/EP2012/073144 WO2013076106A2 (de) | 2011-11-21 | 2012-11-21 | Antriebsvorrichtung für ein medizinisches, insbesondere dentales oder chirurgisches, werkzeug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2782516A2 true EP2782516A2 (de) | 2014-10-01 |
| EP2782516B1 EP2782516B1 (de) | 2017-05-03 |
Family
ID=48470369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12794241.5A Active EP2782516B1 (de) | 2011-11-21 | 2012-11-21 | Antriebsvorrichtung für ein medizinisches, insbesondere dentales oder chirurgisches, werkzeug |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US9989132B2 (de) |
| EP (1) | EP2782516B1 (de) |
| JP (2) | JP5878243B2 (de) |
| KR (1) | KR101970379B1 (de) |
| CN (2) | CN106974736B (de) |
| WO (1) | WO2013076106A2 (de) |
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| DE102012217851A1 (de) * | 2012-09-28 | 2014-04-03 | Sirona Dental Systems Gmbh | Zahnärztliches Präparationsinstrument mit einem abwechselnd umkehrbar rotierenden Werkzeug |
| JP6523255B2 (ja) * | 2013-05-22 | 2019-05-29 | ヴェー ウント ハー デンタルヴェルク ビュールモース ゲーエムベーハー | 医療用器具、特に歯科用又は外科用器具のための駆動装置 |
| EP2805688B1 (de) * | 2013-05-22 | 2016-10-05 | W & H Dentalwerk Bürmoos GmbH | Antriebsvorrichtung für ein medizinisches, insbesondere dentales oder chirurgisches, Werkzeug |
| JP6193697B2 (ja) | 2013-09-20 | 2017-09-06 | 株式会社モリタ製作所 | 歯科用治療装置 |
| EP2910215B1 (de) * | 2014-02-20 | 2018-11-07 | W & H Dentalwerk Bürmoos GmbH | Medizinisches, insbesondere dentales Handinstrument |
| KR20160000320A (ko) * | 2014-06-24 | 2016-01-04 | 주식회사 세양 | 파일 회전 모드의 선택이 가능한 신경 치료용 핸드피스 |
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| DE102014226325A1 (de) * | 2014-12-17 | 2016-06-23 | Sirona Dental Systems Gmbh | Zahnärztliches Instrument mit einem Getriebe zum Antrieb eines Werkzeugs |
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| DE102015214081A1 (de) * | 2015-07-24 | 2017-01-26 | Sirona Dental Systems Gmbh | Zahnärztliches Präparationsinstrument für ein abwechselnd umkehrbar rotierendes Werkzeug |
| US10342572B2 (en) * | 2016-08-15 | 2019-07-09 | Biosense Webster (Israel) Ltd. | Gear mechanism to drive oscillating shaft |
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| EP0642770B1 (de) * | 1993-07-30 | 1999-10-06 | Kaltenbach & Voigt Gmbh & Co. | Winkelförmiges oder gerades Handstück mit einer lösbaren Spannvorrichtung für ein Werkzeug, insbesondere für medizinische Zwecke |
| CN2194109Y (zh) * | 1994-03-31 | 1995-04-12 | 刘伟南 | 刷程可以调节的对刷式电动牙刷 |
| CN2402291Y (zh) * | 1998-08-13 | 2000-10-25 | 廖伟文 | 往复摆动式电动牙刷 |
| JP2003504113A (ja) * | 1999-07-13 | 2003-02-04 | デンツプライ インターナショナル インコーポレーテッド | 歯内治療器具類用の回転ハンドピース |
| JP4224745B2 (ja) * | 1999-08-27 | 2009-02-18 | マニー株式会社 | 歯科用コントラアングルハンドピース |
| FR2840800B1 (fr) * | 2002-06-12 | 2004-08-27 | Micro Mega Int Mfg Sa | Perfectionnement aux appareils d'entrainement, dit<<contre-angles>>, pour outils rotatifs utilises en chirurgie, notamment en chirurgie dentaire |
| CN100413479C (zh) * | 2002-06-27 | 2008-08-27 | 颛清平 | 电动牙刷 |
| GB2413267B (en) * | 2004-04-19 | 2009-02-11 | Paul Michael Clements | Variable function toothbrushes |
| AT502358B1 (de) * | 2004-08-18 | 2008-10-15 | W & H Dentalwerk Buermoos Gmbh | Medizinischer handstückkopf zur übertragung einer hubbewegung auf ein werkzeug |
| DE202007015345U1 (de) * | 2007-11-02 | 2007-12-27 | Teichmann, Gernot, Dr. Dr. | Vorrichtung zur Herstellung einer schraubenförmigen, insbesondere schneckenförmigen Ausnehmung in einem Knochen |
| FR2955243B1 (fr) * | 2010-01-19 | 2013-01-18 | Micro Mega Int Mfg Sa | Appareil pour entrainer en mouvement des outils utilises en chirurgie |
| DE102012217851A1 (de) * | 2012-09-28 | 2014-04-03 | Sirona Dental Systems Gmbh | Zahnärztliches Präparationsinstrument mit einem abwechselnd umkehrbar rotierenden Werkzeug |
-
2012
- 2012-11-21 EP EP12794241.5A patent/EP2782516B1/de active Active
- 2012-11-21 JP JP2014541712A patent/JP5878243B2/ja not_active Expired - Fee Related
- 2012-11-21 WO PCT/EP2012/073144 patent/WO2013076106A2/de not_active Ceased
- 2012-11-21 CN CN201710068928.7A patent/CN106974736B/zh active Active
- 2012-11-21 KR KR1020147013507A patent/KR101970379B1/ko not_active Expired - Fee Related
- 2012-11-21 CN CN201280057011.2A patent/CN103945788B/zh not_active Expired - Fee Related
-
2014
- 2014-05-21 US US14/284,288 patent/US9989132B2/en active Active
-
2015
- 2015-08-31 JP JP2015170944A patent/JP6263505B2/ja active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US9989132B2 (en) | 2018-06-05 |
| CN106974736B (zh) | 2019-06-28 |
| CN103945788A (zh) | 2014-07-23 |
| KR20140095501A (ko) | 2014-08-01 |
| CN106974736A (zh) | 2017-07-25 |
| JP6263505B2 (ja) | 2018-01-17 |
| US20140318287A1 (en) | 2014-10-30 |
| CN103945788B (zh) | 2017-05-24 |
| KR101970379B1 (ko) | 2019-04-18 |
| WO2013076106A2 (de) | 2013-05-30 |
| JP2016026592A (ja) | 2016-02-18 |
| JP5878243B2 (ja) | 2016-03-08 |
| WO2013076106A3 (de) | 2013-09-26 |
| EP2782516B1 (de) | 2017-05-03 |
| JP2014533541A (ja) | 2014-12-15 |
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